EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 B-230.A
An Eaton Brand
B
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1
2
PFR24A - Proportional Valve
Proportional bi-directional, normally closed poppet
18 L/min at 75% • 210 bar (3000 psi)
Description
This is a compact 2 ported
proportional, pressure
compensated, spool type flow
regulator. Ideal for speed
regulation of actuators in many
applications.
Operation
In the de-energized condition
the valve is closed. As current
is applied to the coil the valve
opens proportionally allowing
flow from port 2 to port 1.
Features
• High flow capacity with
reduced space requirements.
• Standard valve bodies and
common cavities.
• One-piece encapsulated coil
with minimal amperage draw.
• Oil immersed armature
solenoid.
• Various coil terminals and
voltages.
• Coil interchangeability with
valves of same series.
• Manual override, seal
variations and other options
available.
• Sealed coil arrangement to
protect stem from corrosion.
• Reversible coil without
affecting performance.
Ratings and Specifications
Performance data is typical with fluid at 32 cST (150 SUS)
Max inlet pressure 210 bar (3000 psi)
Rated flow 28 L/min @ 100%, 23 L/min @ 85%, 18 L/min@ 75%
Hystersis 8% maximum without PWM, 4% maximum with PWM
Frequency 200 Hz to 400 Hz - 200 recommended
Dead band 25-35% of rated current
Response time 300 ms
Internal leakage Up to 200 ml/min, 210 bar differential
Temperature range -30° to 120°C (-22° to 248°F)
Cavity A6701 (see section M)
Electrical data See coil data sheet
Torque cartridge into cavity 30 Nm (22 lbs ft)
Mounting position Unrestricted
Fluids All general purpose hydraulics fluids such as: MIL-H-5606, SAE 10, SAE 20, etc
Seal Material Standard nitrile with PTFE back up rings
Filtration BS5540/4 Class 16/13 (25 micron or better)
Nominal viscosity range 15 to 250 cSt
Standard housing materials Aluminium alloy
Coil Weight 0.3 kg (.6 lbs)
Weight 0.2 kg (.44 lbs)
Seal kit SK974 (Nitrile) SK974V (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Performance Data
Sectional View
Pressure Drop Curves
2 (in)
1 (out)
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
360
288
216
144
72
0
25
20
15
10
5
0
8642
3023157.5
Flow - litres/min
Flow US gpm
% rated amps
0 20 40 60 80 100
35
30
25
20
15
10
5
0
9.2
7.9
6.6
5.3
3.9
2.6
1.3
0
Pressure differential - bar
Flow - US gpm
Flow - l/min
Pressure - psi
0 20 60 100 140 180 220
0 870 2030 3190
9.1
7.8
6.5
5.2
3.9
2.6
1.3
0
35
30
25
20
15
10
5
0
100% of rated amps
75% of rated amps
50% of rated amps
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 B-231.A
An Eaton Brand
B
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
35.50
(1.40)
49.00 (1.90)
21.00
(0.82)
27.8
(1.09)
92.00
(3.62)
7.00
(0.28)
Ø15.80 (0.62)
5.00 A/F
10.00 A/F
16.90
(0.66)
50.00
(1.97)
24.00 A/F
3/4”-16-UNF-2A
2
1
PFR24A - Proportional Valve
Proportional bi-directional, normally closed poppet
18 L/min at 75% • 210 bar (3000 psi)
Model Code
1
Function
PFR2 4A - Cartridge only
2
Seal Material
N - Nitrile
V - Viton
®
3
Manual Override
6 - Screw
2
3
5
1
PFR2 4A N 6
6
3W24
Code Port Size Housing Number
Aluminium
0 Cartridge only
2W 1/4" BSP A12592
3W
3/8" BSP A7450
6T
3/8" SAE A19355
See section J for housing details.
6
Port Size
4
Coil Termination
H - DIN43650
F - Flying Lead
DM - Deutsch moulded
Other terminations available
on request.
5
Voltage
12 - 12 VDC
24 - 24 VDC
4
H
Dimensions
mm (inch)
Installation DrawingCartridge Only
– –
–– –
2 holes
Ø6.8 (0.27)
thro’
16.0
(0.63)
12.8
(0.50)
50.8
(2.00
15.9
(0.63)
31.8
(1.25)
22.0
(0.87)
6.0
(0.24)
19.0 (0.75)
50.0 (1.97)
6.0 (0.24)
1
2
